USB to 2.1mm DC Booster Cable - 9V (ADA2777)

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This cable is kinda fascinating - it has an integrated boost converter, so you can plug it into any USB port (from a computer, battery pack, etc) and it will give … read more

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Hi there I’m just looking for a usb cord to dc 9v with 2.2 a out put

What is 500ma in amps ?

Hi Leah,

500mA is 0.5 Amps.

There will not be a 9v USB converter that is 2.2A. USBs will have a typical output of 500mA max, and SOMETIMES 1A.